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[Qemu-devel] [PATCH v2 0/11] target-mips: optimizations
From: |
Aurelien Jarno |
Subject: |
[Qemu-devel] [PATCH v2 0/11] target-mips: optimizations |
Date: |
Sat, 8 Nov 2008 20:16:04 +0100 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
Hi,
This is version 2 of the series which includes:
- Changes suggested by Laurent Desnogues.
- Correctly free tmp variables
Aurelien
----
This series optimize the MIPS emulation, and more precisely the 64-bit
emulation as shown the table below. All the tests have been done on
an x86-64 host. The 32-bit task corresponds to compilation of C++ code
using a 32-bit userland. The times are given is seconds.
+---------------------+---------------------+
| Boot time | 32-bit task |
+----------+----------+----------+----------+
| Original | Patched | Original | Patched |
+--------------------+----------+----------+----------+----------+
| qemu-system-mips32 | 33 | 33 | 131 | 131 |
| | | | | |
+--------------------+----------+----------+----------+----------+
| qemu-system-mips64 | 53 | 33 | 303 | 138 |
| + 32-bit kernel | | | | |
+--------------------+----------+----------+----------+----------+
| qemu-system-mips64 | 47 | 31 | 231 | 107 |
| + 64-bit kernel | | | | |
+--------------------+----------+----------+----------+----------+
With this series, there is now very few overheads running a 32-bit
system in qemu-system-mips64, and a gain when switching to a 64-bit
kernel. This is probably not true on a 32-bit host.
--
.''`. Aurelien Jarno | GPG: 1024D/F1BCDB73
: :' : Debian developer | Electrical Engineer
`. `' address@hidden | address@hidden
`- people.debian.org/~aurel32 | www.aurel32.net
- [Qemu-devel] [PATCH v2 0/11] target-mips: optimizations,
Aurelien Jarno <=
- [Qemu-devel] [PATCH v2 01/11] target-mips: optimize gen_save_pc(), Aurelien Jarno, 2008/11/08
- [Qemu-devel] [PATCH v2 02/11] target-mips: optimize gen_op_addr_add() (1/2), Aurelien Jarno, 2008/11/08
- [Qemu-devel] [PATCH v2 03/11] target-mips: optimize gen_op_addr_add() (2/2), Aurelien Jarno, 2008/11/08
- [Qemu-devel] [PATCH v2 04/11] target-mips: convert bitfield ops to TCG, Aurelien Jarno, 2008/11/08
- [Qemu-devel] [PATCH v2 05/11] target-mips: convert bit shuffle ops to TCG, Aurelien Jarno, 2008/11/08
- [Qemu-devel] [PATCH v2 06/11] target-mips: optimize gen_arith()/gen_arith_imm(), Aurelien Jarno, 2008/11/08
- [Qemu-devel] [PATCH v2 07/11] target-mips: optimize gen_muldiv(), Aurelien Jarno, 2008/11/08
- [Qemu-devel] [PATCH v2 08/11] target-mips: optimize gen_farith(), Aurelien Jarno, 2008/11/08
- [Qemu-devel] [PATCH v2 09/11] target-mips: optimize movc*(), Aurelien Jarno, 2008/11/08
- [Qemu-devel] [PATCH 10/11] target-mips: gen_compute_branch1(), Aurelien Jarno, 2008/11/08